I'm not sure if this has been posted, I did a quick search and didn't turn up anything.
Recently (yesterday I believe) Ira Sullivan posted a live recording on his myspace. the recording is from 1973 and features features Jaco on bass, playing continuum for the first time live apparently, while it still had no name.
poor sound quality, apparently he had to have it restored and a lot of distortion removed.
there's a blog post about it on his page also, with a great picture.
http://www.myspace.com/irasullivan